CVE-2026-15328: CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in IBM WebSphere Application Server
IBM WebSphere Application Server versions 8.5 and 9.0 are affected by a high-severity HTTP request smuggling vulnerability (CWE-444). This vulnerability involves inconsistent interpretation of HTTP requests, which can lead to serious impacts on confidentiality and integrity. The vulnerability has a CVSS 3.1 base score of 7.4, indicating a high risk. No official patch or remediation guidance has been provided yet by IBM. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-15328 is a vulnerability in IBM WebSphere Application Server 8.5 and 9.0 involving HTTP request smuggling due to inconsistent interpretation of HTTP requests. This flaw can allow attackers to interfere with the processing of HTTP requests, potentially leading to unauthorized access or manipulation of data. The vulnerability is classified under CWE-444 and has a CVSS 3.1 score of 7.4, reflecting high impact on confidentiality and integrity with no impact on availability. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation of this vulnerability could result in unauthorized disclosure or modification of sensitive information processed by the affected WebSphere Application Server instances. The integrity and confidentiality of HTTP communications may be compromised. There is no indication of availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until an official fix is released, organizations should monitor IBM communications for updates and consider applying any recommended temporary mitigations once available.
CVE-2026-15328: CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in IBM WebSphere Application Server
Description
IBM WebSphere Application Server versions 8.5 and 9.0 are affected by a high-severity HTTP request smuggling vulnerability (CWE-444). This vulnerability involves inconsistent interpretation of HTTP requests, which can lead to serious impacts on confidentiality and integrity. The vulnerability has a CVSS 3.1 base score of 7.4, indicating a high risk. No official patch or remediation guidance has been provided yet by IBM. There are no known exploits in the wild at this time.
CVSS v3.1
Score 7.4high
Affected software
IBM
WebSphere Application Server
IBM
WebSphere Application Server - Liberty
cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server___liberty:17.0.0.3:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.7:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-15328 is a vulnerability in IBM WebSphere Application Server 8.5 and 9.0 involving HTTP request smuggling due to inconsistent interpretation of HTTP requests. This flaw can allow attackers to interfere with the processing of HTTP requests, potentially leading to unauthorized access or manipulation of data. The vulnerability is classified under CWE-444 and has a CVSS 3.1 score of 7.4, reflecting high impact on confidentiality and integrity with no impact on availability. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation of this vulnerability could result in unauthorized disclosure or modification of sensitive information processed by the affected WebSphere Application Server instances. The integrity and confidentiality of HTTP communications may be compromised. There is no indication of availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until an official fix is released, organizations should monitor IBM communications for updates and consider applying any recommended temporary mitigations once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-09T18:20:49.634Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a6913179c2644c7f82b8b2f
Added to database: 07/28/2026, 20:37:43 UTC
Last enriched: 08/05/2026, 14:46:34 UTC
Last updated: 09/12/2026, 02:16:35 UTC
Views: 88
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